GNAT Pro is a robust and flexible Ada development environment. It includes professional grade tools, unmatched product support and expert Ada advice designed to allow development teams to take full advantage of the benefits Ada offers, and ensure a smooth, cost-effective development process.

JPE is a Java Partial Evaluator. You can look on it as on preprocessor, which done right. Work of JPE is to transform set of java sources from origin version to specialized, where some set of parameters (i.e. constants) are known in compile time and code can be simplicified. After this JPE can optionally do optimization code transformations, such as devirtualization of method calls and elimiation of unused classes.

Basic4ppc is a powerful development environment that targets Windows Mobile devices (Pocket PC) and desktops. Basic4ppc allows you to write code on the desktop or directly on the device. Now you can easily develop your own applications using the included libraries: GPS, Network, Serial ports, FTP, SQL, HTTP, Graphics and many more.

phc is an open source compiler for PHP with support for plugins. In addition, it can be used to pretty-print or obfuscate PHP code, as a framework for developing applications that process PHP scripts, or to convert PHP into XML and back, enabling processing of PHP scripts using XML tools.